【摘要】 为给卫生型离心泵过流部件结构的优化设计提供依据,采用CFD分析软件Fluent对卫生型离心泵内部流场流动进行了数值模拟和水力性能的参数化分析.给出了建模和流场分析方法,分析了泵内流体速度和压力的分布特性,基于流动模拟结果预测了水力性能.性能预测结果与试验结果吻合较好.关键结构参数对水力性能影响的计算结果表明,叶轮轴向间隙、叶片宽度、叶轮与蜗壳直径比等参数均存在最优值.研究结果对卫生型离心泵的结构改进和性能提高具有参考价值.更多还原

【Abstract】 To provide references for optimization design of the structure of flow passage components on sanitary centrifugal pumps,the numerical simulation of inner flow and parameterization analysis on the hydraulic performance of sanitary centrifugal pumps were carried out through CFD applications.The modeling method and simulation method on internal flow simulation were introduced.The distribution characteristics of the flow velocity and pressure in the pumps were analyzed,and the hydraulic performance of pumps was predicted based on the flow simulation.The simulation results agree well with the experimental results.The calculation results of the impact of the key structure parameters on the hydraulic performance of pumps indicate that the main parameters such as axial clearance of impeller,vane width and ratio of casing and impeller size have their optimum values.The results provide valuable references for structure and performance improvement of sanitary centrifugal pumps.更多还原